CN113624040B - Spiral plate type heat exchanger and manufacturing process - Google Patents
Spiral plate type heat exchanger and manufacturing process Download PDFInfo
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- CN113624040B CN113624040B CN202111194870.3A CN202111194870A CN113624040B CN 113624040 B CN113624040 B CN 113624040B CN 202111194870 A CN202111194870 A CN 202111194870A CN 113624040 B CN113624040 B CN 113624040B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
Abstract
The invention discloses a spiral plate heat exchanger and a manufacturing process, which are used for solving the problems of large size and low heat efficiency of a plate heat exchanger in the prior art, and the invention relates to heat exchange equipment for fixing plates or laminated channels of two heat exchange media, comprising the following steps: a first heat exchange channel and a second heat exchange channel; the first heat exchange channel is provided with a first inlet and a first outlet for the circulation of a first medium, the first heat exchange channel extends outwards along the axial center of the heat exchanger in the same axial direction, and is divided into a first heat exchange section and a second heat exchange section; the second heat exchange channel is a channel formed by gaps between the first heat exchange channels which are coaxially adjacent, and the first medium and the second medium realize heat exchange in the flowing process. The invention has the advantages of compact design, small volume, light weight, high heat exchange efficiency and less heat loss.
Description
Technical Field
The invention relates to the field of equipment for liquid-vapor heat exchange and liquid-liquid heat exchange. In particular to a spiral plate type heat exchanger and a manufacturing process thereof.
Background
At present, when the liquid and the steam are subjected to heat exchange operation, a heat exchanger is a better choice. The plate heat exchanger is widely applied to the departments of metallurgy, mine, petroleum, chemical industry, electric power, medicine, food, chemical fiber, paper making, light textile, ship, heat supply and the like, and can be used for various conditions such as heating, cooling, evaporation, condensation, sterilization, disinfection, waste heat recovery and the like.
The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is an ideal device for heat exchange of liquid-liquid and liquid-vapor. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Under the condition of the same pressure loss, the heat transfer coefficient of the heat exchanger is 3-5 times higher than that of the tubular heat exchanger, the occupied area of the heat exchanger is one third of that of the tubular heat exchanger, and the heat recovery rate can reach more than 90 percent.
The plate type heat exchanger mainly comprises two types of frame type (detachable type) and brazing type, and the plate type mainly comprises three types of herringbone corrugated plates, horizontal straight corrugated plates and tumor-shaped plate sheets, but the plate type heat exchanger has the problems of large size and low heat efficiency.
Disclosure of Invention
Aiming at the problems of large size and low thermal efficiency of a plate heat exchanger in the prior art, the invention provides a spiral plate heat exchanger and a manufacturing process thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a spiral plate heat exchanger, comprising:
the first heat exchange channel is provided with a first inlet and a first outlet for a first medium to flow through, the first heat exchange channel coaxially and externally extends in a spiral manner around the axis of the heat exchanger, the first heat exchange channel is divided into a first heat exchange section and a second heat exchange section, the first medium sequentially enters from the first inlet, sequentially flows through the first heat exchange section and the second heat exchange section, and then flows out from the first outlet;
and the second heat exchange channel is provided with a second inlet and a second outlet for a second medium to flow through, the second heat exchange channel is a channel formed by gaps between the first heat exchange channels which are coaxially adjacent, the second medium enters from the second inlet in sequence, flows through the channel formed by the gaps and flows out from the second outlet, and the heat exchange between the first medium and the second medium is realized in the flowing process.
The spiral plate type heat exchanger further comprises a first heat exchange section and a second heat exchange section which are formed by separating the first heat exchange channel through the flow blocking strip, and the flow blocking strip is arranged in the middle of the first heat exchange channel.
The spiral plate heat exchanger as described above further includes:
an outer sleeve, the first heat exchange channel and the second heat exchange channel being disposed within the outer sleeve;
the inner end cover connecting pipe assembly is a medium inlet and outlet channel formed by a first inlet and a first outlet of the first heat exchange tube outside two end faces of the spiral heat exchange plate, and the first inlet and the first outlet of the inner end cover connecting pipe assembly are respectively arranged at two ends of the axis of the spiral heat exchange plate; and the number of the first and second groups,
and the outer end cover connecting pipe assembly is a medium inlet and outlet channel formed by a second inlet and a second outlet of the second heat exchange tube on the outer side of two end faces of the outer sleeve.
The spiral plate heat exchanger as described above further includes:
the first heat exchange channel and the second heat exchange channel are arranged in the spiral heat exchange plate extension type outer sleeve, and the spiral heat exchange plate extension type outer sleeve is formed by rolling redundant tail ends of the spiral heat exchange plates;
the inner end cover connecting pipe assembly is a medium inlet and outlet channel formed by a first inlet and a first outlet of the first heat exchange tube outside two end faces of the spiral heat exchange plate, and the first inlet and the first outlet of the inner end cover connecting pipe assembly are respectively arranged at two ends of the axis of the spiral heat exchange plate; and the number of the first and second groups,
and the outer end cover connecting pipe assembly is a medium inlet and outlet channel formed by a second inlet and a second outlet of the second heat exchange tube at the outer sides of two end surfaces of the extension type outer sleeve of the spiral heat exchange plate.
According to the spiral plate type heat exchanger, furthermore, inclined flow guide holes are uniformly formed in the middle of the flow blocking strips, outlet ends of the flow guide holes incline towards the first outlet direction far away from the inner end cover connecting pipe assembly, and the flow guide holes are used for rapidly transferring a small part of first media in the first heat exchange section to the second heat exchange section without passing through an empty avoiding area.
According to the spiral plate type heat exchanger, the pipe wall of the first heat exchange channel is pressed with the conical nail bulges.
The spiral plate type heat exchanger adopts an all-welded structure.
The spiral plate type heat exchanger adopts titanium alloy or stainless steel.
The spiral plate heat exchanger as described above further includes: and the partition plate is matched with the flow blocking strip to divide the first heat exchange channel into a first heat exchange section and a second heat exchange section.
The spiral plate heat exchanger as described above, further, the inlet temperature of the first medium is lower than the inlet temperature of the second medium.
A manufacturing process of a spiral plate heat exchanger, which is used for manufacturing a first heat exchange channel of the spiral plate heat exchanger, and comprises the following steps:
the flat steel plate is asymmetrically folded along the length direction;
winding the folded part in a single layer to form a half-circle;
continuing double-layer rolling, wherein the flow blocking strips and the spiral heat exchange plates are rolled together;
and (6) welding and sealing edges.
According to the manufacturing process of the spiral plate type heat exchanger, the flat steel plate is pressed with the conical nail bulges with opposite directions on the left side and the right side of the folding line respectively, and the transverse center lines of the left conical nail and the right conical nail are staggered.
Compared with the prior art, the invention has the beneficial effects that: the first heat exchange channel and the second heat exchange channel are arranged in the outer sleeve, the design is compact, the size is small, the weight is light, and the installation is convenient. Two media with different temperatures enter the heat exchanger from two mutually isolated channels for heat exchange, and 2 media circulate in a closed area formed by 2 plates for heat exchange respectively, so that the heat exchange efficiency is high, and the heat loss is small.
The invention adopts a double-circulation one-way channel design, the first medium and the second medium realize heat exchange in the flowing process, and meanwhile, the corrosion resistance is strong by adopting the same metal material (titanium alloy or stainless steel) and a full-welded structure; the invention also has the characteristic of low pressure reduction, and has wide application temperature range and working temperature of 0-230 ℃.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a heat exchanger according to an embodiment of the present invention in an internal cutaway view;
FIG. 2 is a schematic diagram of the working principle of a heat exchanger according to an embodiment of the present invention;
FIG. 3 is a schematic view of a tapered nail structure of a flat steel plate of a heat exchanger according to an embodiment of the present invention;
FIG. 4 is a schematic view of a process flow for manufacturing a first heat exchange channel of a heat exchanger according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the flow direction of a medium after the spiral heat exchange plates are unfolded according to the embodiment of the present invention;
FIG. 6 is a schematic perspective cut-away view of a heat exchanger according to an embodiment of the present invention;
FIG. 7 is a perspective view of a divider plate according to an embodiment of the present invention;
FIG. 8 is a schematic view showing a medium flowing direction after the spiral heat exchange plates are unfolded according to still another embodiment of the present invention;
FIG. 9 is a schematic longitudinal sectional view of a pilot hole according to an embodiment of the present invention;
fig. 10 is a longitudinal sectional perspective view of a heat exchanger according to still another embodiment of the present invention.
Wherein: 1. a spiral heat exchange plate; 2. the inner end cover is connected with the pipe assembly; 3. a partition plate; 4. a flow blocking strip; 5. an outer sleeve; 6. the outer end cover is connected with the pipe assembly; 7. a flat steel plate; 8. a conical nail; 9. a flow guide hole; 10. an extension type outer sleeve of the spiral heat exchange plate; 31. a first baffle plate; 32. a groove; 33. a second baffle; 71. a reserved area; 91. an inlet end; 92. an outlet end; 101. a first inlet; 102. a first outlet; 103. a second inlet; 104. a second outlet; 105. a first heat exchange channel; 106. a second heat exchange channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 9, fig. 1 is a schematic view of a heat exchanger according to an embodiment of the present invention, in a cutaway interior; FIG. 2 is a schematic diagram of the working principle of a heat exchanger according to an embodiment of the present invention; FIG. 3 is a schematic view of a tapered nail structure of a flat steel plate of a heat exchanger according to an embodiment of the present invention; FIG. 4 illustrates a process for fabricating a heat exchanger according to an embodiment of the present invention; FIG. 5 is a schematic view illustrating the flow direction of the medium in the spiral heat exchange plate according to the embodiment of the present invention; FIG. 6 is a schematic perspective cut-away view of a heat exchanger according to an embodiment of the present invention; FIG. 7 is a perspective view of a divider plate according to an embodiment of the present invention; FIG. 8 is a schematic view showing the flow direction of a medium in a spiral heat exchange plate according to still another embodiment of the present invention; fig. 9 is a longitudinal sectional view of a pilot hole according to an embodiment of the present invention.
The invention provides a spiral plate type heat exchanger and a manufacturing process thereof, wherein two media with different temperatures enter the heat exchanger from two mutually isolated channels for heat exchange, and the spiral plate type heat exchanger has the advantages of compact design, small volume, light weight, high heat exchange efficiency and less heat loss.
Example one
A spiral plate heat exchanger, comprising: first heat exchange channels 105 and second heat exchange channels 106; the first heat exchange channel 105 is provided with a first inlet 101 and a first outlet 102 for a first medium to flow through, the first heat exchange channel 105 extends coaxially and externally in a spiral mode around the axis of the heat exchanger, the first heat exchange channel 105 is divided into a first heat exchange section and a second heat exchange section, the first medium enters from the first inlet 101 in sequence, flows through the first heat exchange section and the second heat exchange section in sequence and flows out from the first outlet 102; the second heat exchange channel 106 is provided with a second inlet 103 and a second outlet 104 for the second medium to flow through, and the second heat exchange channel 106 is a channel formed by the gap between the first heat exchange channels 105 which are coaxially adjacent, the second medium enters from the second inlet 103 in sequence, flows through the channel formed by the gap, and flows out from the second outlet 104, wherein the first medium and the second medium realize heat exchange in the flowing process.
As shown in fig. 1, the spiral heat exchange plate 1 is used for separating 2 media and heat conduction; the inner end cover connecting pipe component 2 is used for inflow and outflow of a first medium; the partition plate 3 and the flow blocking strips 4 are used for preventing the first medium from directly flowing into and flowing out of the heat exchanger from the inner end cover connecting pipe assembly 2 at two ends, so that the flowing first medium can fully exchange heat through the spiral heat exchange plate and then flows out of the heat exchanger. The outer sleeve 5 is used for fixing and protecting the spiral heat exchange plate and providing a closed heat exchange space for the second medium; the outer end cap pipe connection 6 is used for inflow and outflow of the second medium. Two media with different temperatures enter the heat exchanger from two mutually isolated channels for heat exchange, the heat exchange mode is as shown in figure 2, and different from the double-plate spiral structure on the market at present, 2 media circulate and exchange heat in a closed area formed by 2 plates respectively.
As an alternative, in some embodiments, the first heat exchange channel 105 is divided into a first heat exchange section and a second heat exchange section by the baffle 4, and the baffle 4 is transversely disposed in the middle of the first heat exchange channel 105. The heat exchanger uses the high-temperature resistant silica gel flow blocking strip 4 to prevent the first medium from directly flowing into and flowing out of the heat exchanger from the inner end cover connecting pipe component 2 at two ends. The silica gel flow blocking strip 4 and the spiral heat exchange plate 1 are rolled together, and after rolling is finished, the edge of the first heat exchange channel 105 is welded and sealed to isolate the first heat exchange channel 105 from the second heat exchange channel 106.
As an optional implementation manner, in some embodiments, the method further includes: the outer sleeve 5, the inner end cap pipe connecting component 2 and the outer end cap pipe connecting component 6, and the first heat exchange channel 105 and the second heat exchange channel 106 are arranged in the outer sleeve 5; the inner end cover connecting pipe assembly 2 is a medium inlet and outlet channel formed by a first inlet 101 and a first outlet 102 of a first heat exchange tube outside two end faces of the spiral heat exchange plate 1, and the first inlet 101 and the first outlet 102 of the inner end cover connecting pipe assembly 2 are respectively arranged at two ends of the axis of the spiral heat exchange plate 1; and a medium inlet and outlet channel is formed on the outer side of two end faces of the outer sleeve 5 by a second inlet 103 and a second outlet 104 of the outer end cover connecting pipe assembly 6, which are second heat exchange channels.
Referring to fig. 5, the direction of arrows in the figure illustrates the flow direction of the media after the spiral heat exchange plate 1 is unfolded. The first medium enters the first heat exchange section of the spiral heat exchange plate 1 through the first inlet 101 of the inner end cap tube assembly 2, and due to the blocking of the flow blocking bars 4, the first medium is forced to flow into the second heat exchange section from the void-free area of the flow blocking bars 4, and finally flows out from the first outlet 102 of the inner end cap tube assembly 2.
As an alternative, in some embodiments, the wall of the first heat exchanging channel 105 is pressed with the protrusion of the conical pin 8.
As an alternative embodiment, in some embodiments, the heat exchanger is an all-welded structure.
As an alternative embodiment, in some embodiments, the heat exchanger is made of titanium alloy or stainless steel.
Since a hook-jade-like region (i.e. the axial region after the spiral heat exchange plate 1 is formed) is formed by the spiral heat exchange plate 1 at the beginning of the winding process, the width of the flow blocking strip 4 cannot completely block the region, so as to force the first medium to flow along the predetermined route, as shown in fig. 6, in some embodiments, the method further includes: division board 3, division board 3 cooperation keep off and flow strip 4 and separate first heat transfer passageway 105 and form first heat transfer section and second heat transfer section, and is concrete, division board 3 and keep off and flow strip 4 fixed connection, and keep off and flow strip 4 and keep away from one side of division board 3 and keep away the sky (keep off that flow strip 4 does not totally cut off the inner space of first heat transfer passageway 105 promptly) for intercommunication between first heat transfer section and the second heat transfer section. The partition plate 3 is arranged in the axial region of the spiral heat exchange plate 1, and the shape of the partition plate is matched with that of the axial region. More specifically, as shown in fig. 7, the partition plate 3 includes a first baffle 31 and a second baffle 33 that are mirror-symmetrical, a groove 32 is provided between the first baffle 31 and the second baffle 33, and the baffle strip 4 can be wound and fixed on the groove 32, and mainly plays a role of fixing so as to follow the spiral heat exchange plate 1 to roll together. It is easy to know that the width of the barrier strips 4 should be slightly larger than the depth of the grooves 32 (for example, 20% -30%), so that the wound portions of the barrier strips 4 are interference-filled in the grooves 32 during the rolling process, and the portions of the barrier strips 4 contacting with the spiral heat exchange plates 1 are interference-fitted, thereby preventing the barrier strips 4 from falling off in practical use.
As an alternative, in some embodiments, the inlet temperature of the first medium is lower than the inlet temperature of the second medium.
On the basis of the above embodiment, as shown in fig. 8, the middle part of the baffle strip 4 is uniformly provided with inclined diversion holes 9, the outlet ends 92 of the diversion holes 9 are inclined towards the direction far away from the first outlet 102 of the inner end cover tube connecting assembly 2, and the diversion holes 9 are used for rapidly transferring a small part of the first medium in the first heat exchange section to the second heat exchange section without passing through the clearance area. The reason for this is that, because the medium in the second heat exchange section has been through the heat transfer of a period of time, its temperature has descended to some extent, and the newly-increased medium that supplements to the second heat exchange section from water conservancy diversion hole 9 can reheat the existing medium in the second heat exchange section, and, the slope of water conservancy diversion hole 9 is provided with and does benefit to newly-increased medium and keeps away the empty regional medium that flows downwards and mix, forms the vortex that the arrow in the figure shows, accelerates the inside heat exchange of spiral heat transfer board 1, is favorable to improving the whole heat exchange efficiency of the spiral plate heat exchanger of this embodiment then. It should be noted that no flow guide holes 9 are provided in the partition plate 3.
As a preferred embodiment of the above embodiment, as shown in fig. 9, the diameter of the inlet end 91 of the guiding hole 9 is at least two times larger than the diameter of the outlet end 92, and according to the principle of fluid mechanics, the pressure of the medium decreases but the flow rate increases when the medium passes through the gradually shrinking pipe, so that the flow rate increases after the medium passes through the guiding hole 9, and a part of the medium in the first heat exchange section is obliquely sprayed to the second heat exchange section.
Example two
The difference between this embodiment and the first embodiment is that, instead of using the independent outer sleeve 5, one layer of the spiral heat exchange plate extension type outer sleeve 10 is further rolled on the redundant tail end of the rolled spiral heat exchange plate 1, which is used as a substitute for the outer sleeve 5, so that the spiral heat exchange plate 1 and the spiral heat exchange plate extension type outer sleeve 10 are both rolled from one flat steel plate, and the process is simpler. As shown in fig. 10, fig. 10 is a longitudinal sectional perspective view of a heat exchanger according to another embodiment of the present invention, in which a spiral heat exchange plate 1 is used to separate 2 media and heat transfer; the inner end cover connecting pipe component 2 is used for inflow and outflow of a first medium; the partition plate 3 and the flow blocking strips 4 are used for preventing the first medium from directly flowing into and flowing out of the heat exchanger from the inner end cover connecting pipe assembly 2 at two ends, so that the flowing first medium can fully exchange heat through the spiral heat exchange plate and then flows out of the heat exchanger. The spiral heat exchange plate extension type outer sleeve 10 is used for wrapping the outermost periphery of the spiral heat exchange plate 1 and providing a closed heat exchange space for a second medium, and the spiral heat exchange plate extension type outer sleeve 10 is formed by rolling the redundant tail end of the spiral heat exchange plate 1 and is equivalent to the outer sleeve 5 in the first embodiment; the outer end cap pipe assembly 6 is used for the inflow and outflow of the second medium, and the outer end cap pipe assembly 6 is buckled at the upper end and the lower end of the spiral heat exchange plate extension type outer sleeve 10.
The first heat exchange channel 105 and the second heat exchange channel 106 are arranged in the spiral heat exchange plate extension type jacket 10; the inner end cover connecting pipe assembly 2 is a medium inlet and outlet channel formed by a first inlet 101 and a first outlet 102 of a first heat exchange tube outside two end faces of the spiral heat exchange plate 1, and the first inlet 101 and the first outlet 102 of the inner end cover connecting pipe assembly 2 are respectively arranged at two ends of the axis of the spiral heat exchange plate 1; and the outer end cover connecting pipe assembly 6 is a medium inlet and outlet channel formed by a second inlet 103 and a second outlet 104 which are buckled at the upper end and the lower end of the spiral heat exchange plate extension type outer sleeve 10 and are communicated with a second heat exchange tube at the outer sides of the two end surfaces of the spiral heat exchange plate extension type outer sleeve 10.
Except for the differences described above, the other parts of the present embodiment are consistent with the examples.
EXAMPLE III
A process for manufacturing a spiral plate heat exchanger for manufacturing a first heat exchanging channel 105 of a spiral plate heat exchanger as described above, comprising:
the flat steel plate 7 is asymmetrically folded along the length direction; winding the folded part in a single layer to form a half-circle; and (4) continuing double-layer rolling, wherein the flow blocking strips 4 and the spiral heat exchange plates 1 are rolled together, and finally welding and sealing edges. Specifically, the baffle strips 4 are wound and fixed in the middle of the partition plate 3, then the partition plate 3 is installed in the center of the folded part of the spiral heat exchange plate 1, the baffle strips 4 are straightened, and finally the double-layer rolling step is carried out. The heat exchanger adopts a single-plate spiral structure, namely, a flat steel plate is manufactured by folding, rolling a half circle in a single layer and rolling in a double layer, and then sealing edges after rolling. The single-plate spiral structure simplifies the manufacturing process of the heat exchanger, reduces the size and the weight by half compared with the heat exchanger with a double-plate spiral structure under the condition of the same heat exchange area, and is difficult to generate electrochemical corrosion in integral forming compared with the existing brazing distance column.
According to the manufacturing process of the spiral plate type heat exchanger, the flat steel plate 7 is pressed with the conical nails 8 protruding towards opposite directions on the left side and the right side of the folding line respectively, and the transverse center lines of the left conical nail 8 and the right conical nail 8 are staggered. The conical nail 8 is formed by punching, the forming is rapid, and the conical nail 8 can increase the heat exchange area of the heat exchanger and improve the heat exchange efficiency; and in the process of rolling the spiral heat exchange plate 1, the distance between the plates can be effectively controlled by the conical nail 8, compared with the method that the distance between the plates is adjusted by welding distance columns generally adopted in the market at present, the manufacturing process is simpler by adopting the conical nail 8.
Preferably, the area between the left conical nail 8 and the right conical nail 8 is a reserved area 71 without conical nails, so as to avoid the conical nails 8 from affecting the folding step, and the width of the reserved area 71 is equal to the perimeter of the partition plate 3. The far ends of the left side conical nail 8 and the right side conical nail 8 relative to the reserved area 71 are areas without conical nails, so that subsequent edge sealing is facilitated.
The first heat exchange channel 105 and the second heat exchange channel 106 are arranged in the outer sleeve 5, so that the heat exchanger is compact in design, small in size, light in weight and convenient to install. Two media with different temperatures enter the heat exchanger from two mutually isolated channels for heat exchange, and 2 media circulate in a closed area formed by 2 plates for heat exchange respectively, so that the heat exchange efficiency is high, and the heat loss is small.
The invention adopts a double-circulation one-way channel design, the first medium and the second medium realize heat exchange in the flowing process, and meanwhile, the corrosion resistance is strong by adopting the same metal material (titanium alloy or stainless steel) and a full-welded structure; the invention also has the characteristic of low pressure reduction, and has wide application temperature range and working temperature of 0-230 ℃.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (5)
1. A spiral plate heat exchanger, comprising:
the first heat exchange channel is provided with a first inlet and a first outlet for a first medium to flow through, the first heat exchange channel coaxially and externally extends in a spiral manner around the axis of the heat exchanger, the first heat exchange channel is divided into a first heat exchange section and a second heat exchange section, the first medium sequentially enters from the first inlet, sequentially flows through the first heat exchange section and the second heat exchange section, and then flows out from the first outlet;
the second heat exchange channel is provided with a second inlet and a second outlet for a second medium to flow through, the second heat exchange channel is a channel formed by gaps between the first heat exchange channels which are coaxially adjacent, the second medium enters from the second inlet in sequence, flows through the channel formed by the gaps and flows out from the second outlet, and the first medium and the second medium realize heat exchange in the flowing process; wherein, still include:
the first heat exchange channel and the second heat exchange channel are arranged in the spiral heat exchange plate extension type outer sleeve, and the spiral heat exchange plate extension type outer sleeve is formed by rolling redundant tail ends of spiral heat exchange plates;
the inner end cover connecting pipe assembly is a medium inlet and outlet channel formed by a first inlet and a first outlet of the first heat exchange tube outside two end faces of the spiral heat exchange plate, and the first inlet and the first outlet of the inner end cover connecting pipe assembly are respectively arranged at two ends of the axis of the spiral heat exchange plate; and the number of the first and second groups,
the outer end cover connecting pipe assembly is a medium inlet and outlet channel formed by a second inlet and a second outlet of the second heat exchange tube at the outer sides of two end surfaces of the extension type outer sleeve of the spiral heat exchange plate;
the separation plate is arranged in the axis area of the spiral heat exchange plate, and the shape of the separation plate is matched with the axis area of the spiral heat exchange plate;
the separation plate is fixedly connected with the flow blocking strip, the flow blocking strip is made of high-temperature-resistant silica gel, the flow blocking strip is rolled along with the spiral heat exchange plate, and the contact part of the flow blocking strip and the spiral heat exchange plate is in interference fit; the partition plate is matched with the flow blocking strip to divide the first heat exchange channel into a first heat exchange section and a second heat exchange section;
inclined flow guide holes are uniformly formed in the middle of the flow blocking strip, outlet ends of the flow guide holes are inclined towards a first outlet direction far away from the inner end cover connecting pipe assembly, and the flow guide holes are used for rapidly transferring part of first media in the first heat exchange section to the second heat exchange section without passing through a clearance area.
2. A spiral plate heat exchanger according to claim 1, wherein the heat exchanger is of an all-welded structure, and the heat exchanger is made of titanium alloy or stainless steel.
3. A spiral plate heat exchanger according to any of claims 1-2, wherein the inlet temperature of the first medium is lower than the inlet temperature of the second medium.
4. A process for manufacturing a spiral plate heat exchanger for manufacturing a first heat exchange channel of a spiral plate heat exchanger according to any one of claims 1-2, comprising:
the flat steel plate is asymmetrically folded along the length direction;
winding the folded part in a single layer to form a half-circle;
continuing double-layer rolling, wherein the flow blocking strips and the spiral heat exchange plates are rolled together;
and (6) welding and sealing edges.
5. A manufacturing process of a spiral plate type heat exchanger according to claim 4, wherein the flat steel plate is pressed with conical nail bulges facing opposite directions on the left side and the right side of the folding line respectively, and the transverse center lines of the left conical nail and the right conical nail are staggered.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2283742A1 (en) * | 1974-09-06 | 1976-04-02 | Jouet Etienne | Spirally wound heat exchanger tube mfr - uses folded over metal sheet with plastic spacers as initial form for rolling |
| CN101749972A (en) * | 2008-12-15 | 2010-06-23 | 付涛 | Spiral plate heat exchanger and production method thereof |
| CN213657601U (en) * | 2020-09-17 | 2021-07-09 | 泰兴市现代压力容器制造有限公司 | Heat exchanger for floating head type autoclave |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3404374A1 (en) * | 1984-02-08 | 1985-08-14 | W. Schmidt GmbH & Co KG, 7518 Bretten | SPIRAL HEAT EXCHANGER |
| CN102445095B (en) * | 2011-10-20 | 2013-12-04 | 吴植仁 | Multi-passage spiral corrugated plate type heat exchanger |
| CN102809313A (en) * | 2012-03-02 | 2012-12-05 | 中山华帝燃具股份有限公司 | Spiral plate heat exchanger |
| CN203881200U (en) * | 2014-04-25 | 2014-10-15 | 武汉工程大学 | Heat exchanger with taper holes formed in baffle plates |
| CN204007249U (en) * | 2014-08-07 | 2014-12-10 | 辽宁天宇冷却器制造有限公司 | A kind of Multi-level deflector spiral-plate heat exchanger |
| CN214223844U (en) * | 2020-12-21 | 2021-09-17 | 江苏永益化工装备有限公司 | High efficiency spiral plate heat exchanger |
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2021
- 2021-10-14 CN CN202111194870.3A patent/CN113624040B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2283742A1 (en) * | 1974-09-06 | 1976-04-02 | Jouet Etienne | Spirally wound heat exchanger tube mfr - uses folded over metal sheet with plastic spacers as initial form for rolling |
| CN101749972A (en) * | 2008-12-15 | 2010-06-23 | 付涛 | Spiral plate heat exchanger and production method thereof |
| CN213657601U (en) * | 2020-09-17 | 2021-07-09 | 泰兴市现代压力容器制造有限公司 | Heat exchanger for floating head type autoclave |
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